Figueroa-Viramontes, U. (2009) “SPAD-502 calibration to evaluate nitrogen requirements in forage corn”, REVISTA TERRA LATINOAMERICANA, 27(4), pp. 303–309. Available at: https://mail.terralatinoamericana.org.mx/index.php/terra/article/view/1267 (Accessed: 19 September 2024).